| MRC | Criteria | Characteristic |
|---|---|---|
| AAJD | THREAD CLASS | 2A |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AASA | THREAD LENGTH | 1.750 INCHES MINIMUM |
| AASB | FASTENER LENGTH | 5.516 INCHES NOMINAL |
| AASK | HEAD STYLE | HEXAGON |
| AASU | HEAD HEIGHT | 0.500 INCHES NOMINAL |
| AATB | WIDTH BETWEEN FLATS | 1.750 INCHES NOMINAL |
| AATN | SHOULDER DIAMETER | 1.373 INCHES MINIMUM FIRST SHOULDER AND 1.374 INCHES MAXIMUM FIRST SHOULDER |
| AATX | SHOULDER LENGTH | 1.890 INCHES NOMINAL FIRST SHOULDER |
| AAWB | SHANK UNTHREADED HOLE DIAMETER | 0.250 INCHES NOMINAL FIRST HOLE |
| AHYM | NOMINAL THREAD DIAMETER | 1.250 INCHES |
| CMLP | THREAD QUANTITY PER INCH | 12 |
| CQFM | HARDNESS RATING | 35.0 ROCKWELL C MINIMUM OVERALL AND 38.0 ROCKWELL C MAXIMUM OVERALL |
| CRZS | DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER | 5.204 INCHES NOMINAL FIRST HOLE |
| CWYB | SHOULDER SHAPE | ROUND FIRST SHOULDER |
| FEAT | SPECIAL FEATURES | UNDERCUT BETWEEN HEAD AND SHOULDER 1.250 IN. DIA BY 0.125 IN. LG;UNTHREADED PORTION BETWEEN SHOULDER AND THREADS IS 1.751 IN. LG |
| MATT | MATERIAL | STEEL COMP 3140 OVERALL |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | SAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| THSD | THREAD SERIES DESIGNATOR | UNF |
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